Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8821
Type: Artigo
Title: Water-Tank Studies of Separating Flow Over Rough Hills
Author(s)/Inventor(s): Loureiro, Juliana Braga Rodrigues
Monteiro, André Sampaio
Pinho, Fernando Manuel Coutinho Tavares de
Freire, Atila Pantaleão Silva
Abstract: Indisponível.
Abstract: The present work investigates the lower boundary condition for flows over a steep, rough hill. Simple asymptotic arguments together with the mixing-length hypothesis are used to derive a local analytical solution that is tested against three different flow conditions. In all, 36 velocity profiles are compared with the proposed expression. The experiments were carried out in a water channel and velocity measurements were made through laser Doppler anemometry. The extent of separated flow was made to vary as a function of the roughness and the Reynolds number. The analysis includes regions of attached as well as separated flow. In particular, the solution of Stratford is studied at the points of separation and re-attachment and found to apply equally well in rough walls.
Keywords: Hill
Law of the wall
Roughness
Separation
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Springer
In: Boundary-Layer Meteorology
Volume: 129
Issue: 2
Issue Date: 30-Sep-2008
DOI: 10.1007/s10546-008-9314-x
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 0006-8314
Appears in Collections:Engenharias

Files in This Item:
File Description SizeFormat 
2008_FREIRE_BLM129-min.pdf676,34 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.